Eaton VFI Transformer

The three-phase VFI Transformer is designed for commercial or industrial applications where conventional transformer or loop protection packages are inadequate, or where space limitations prove to be restrictive. The compact design simplifies installation and requires less real estate than conventional transformer/switchgear packages.

The VFI transformer combines a conventional Cooper Power Systems distribution transformer with the proven Vacuum Fault Interrupter (VFI). This combination provides both voltage transformation and either transformer or loop overcurrent protection in one space saving, money saving package.

The three-phase VFI transformer with transformer protection protects the transformer and provides proper coordination with upstream protective devices. When a transformer fault or overload condition occurs, the VFI breaker trips and isolates the transformer, leaving the feeder uninterrupted. The three-phase VFI transformer with loop protection protects the loop or downstream section of a feeder. When a fault occurs downstream, the VFI breaker trips and isolates the fault, leaving the transformer load uninterrupted.